Reference Delayed::Job instead of Delayed::Backend::ActiveRecord

Delayed removed Delayed::Backend::ActiveRecord and DelayedJob actually
aliases it.

Author: f-mer

lib/delayed_cron_job.rb

@@ -23,17 +23,12 @@ module DelayedCronJob
   Delayed::Backend::Mongoid::Job.send(:include, DelayedCronJob::Backend::UpdatableCron)
 end
 
-if defined?(Delayed::Backend::ActiveRecord)
-  if defined?(Rails::Railtie)
-    # Postpone initialization to railtie for correct order
-    require 'delayed_cron_job/backend/active_record/railtie'
-  else
-    # Do the same as in the railtie
-    Delayed::Backend::ActiveRecord::Job.send(:include, DelayedCronJob::Backend::UpdatableCron)
-    if Delayed::Backend::ActiveRecord::Job.respond_to?(:attr_accessible)
-      Delayed::Backend::ActiveRecord::Job.attr_accessible(:cron)
-    end
-  end
+if defined?(Rails::Railtie)
+  # Postpone initialization to railtie for correct order
+  require 'delayed_cron_job/backend/active_record/railtie'
+else
+  # Do the same as in the railtie
+  Delayed::Job.include(DelayedCronJob::Backend::UpdatableCron)
 end
 
 Delayed::Worker.plugins << DelayedCronJob::Plugin

lib/delayed_cron_job/backend/active_record/railtie.rb

@@ -3,10 +3,7 @@ module Backend
     module ActiveRecord
       class Railtie < ::Rails::Railtie
         config.after_initialize do
-          Delayed::Backend::ActiveRecord::Job.send(:include, DelayedCronJob::Backend::UpdatableCron)
-          if Delayed::Backend::ActiveRecord::Job.respond_to?(:attr_accessible)
-            Delayed::Backend::ActiveRecord::Job.attr_accessible(:cron)
-          end
+          Delayed::Job.include(DelayedCronJob::Backend::UpdatableCron)
         end
       end
     end